3 x ------ 2 x - 4
x^3/(x^2 - 4)
x + 2/(-2 + x) + 2/(2 + x)
2 2 x + ------ + ----- -2 + x 2 + x
x^3/(-4.0 + x^2)
4*x x + ------- 2 -4 + x
x + 4*x/(-4 + x^2)
3 x ---------------- (-2 + x)*(2 + x)
x^3/((-2 + x)*(2 + x))